﻿//
// Copyright (c) 2011 Western Data Solutions (www.westerndatasolutions.com) (Armen Shimoon)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
// documentation files (the "Software"), to deal in the Software without restriction, including without 
// limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of 
// the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO 
// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS 
// OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Linq;

namespace WDS.Bencode.Fluent
{
    /// <summary>
    /// Allows for constructing bencode dictionary elements using fluent syntax
    /// </summary>
    public class BencodeDictionaryBuilder
    {
        /// <summary>
        /// Used for adding list elements using a lambda expression
        /// </summary>
        private BencodeDictionaryPairAdder dictionaryPairAdder;

        /// <summary>
        /// Default constructor
        /// </summary>
        public BencodeDictionaryBuilder()
        {
            dictionaryPairAdder = new BencodeDictionaryPairAdder();
        }

        /// <summary>
        /// Allows the caller to specify dictionary entries using a lambda expression
        /// </summary>
        /// <param name="entries">Lambda expression for adding dictionary entries</param>
        /// <returns>Fluent-syntax</returns>
        public BencodeDictionaryBuilder Entries(Action<BencodeDictionaryPairAdder> entries)
        {
            entries(dictionaryPairAdder);
            return this;
        }

        /// <summary>
        /// Creates a bencode dictionary element representing the current state of this fluent-builder
        /// </summary>
        /// <returns>Bencode dictionary element</returns>
        public BencodeDictionary ToBencodeDictionary()
        {
            return Bencode.Dictionary(dictionaryPairAdder.ToEnumerable().ToArray());
        }
    }
}